package lianxi3;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.List;
import static java.util.Comparator.comparing;


public class Sorting {

	public static void main(String[] args) {
		List<Apple> inventory=new ArrayList<>();
		inventory.addAll(Arrays.asList(new Apple(80,"green"),new Apple(155, "green"),
				new Apple(120,"red")));
		inventory.sort(new AppleComparator());
		inventory.set(1, new Apple(30,"green"));
		
		
		inventory.sort(new Comparator<Apple>() {
			public  int compare(Apple a1,Apple a2){
				return a1.getWeight().compareTo(a2.getWeight());
			}
		});
		
		System.out.println(inventory);
		
		inventory.set(1, new Apple(20,"red"));
		
		inventory.sort((a1,a2)->a1.getWeight().compareTo(a2.getWeight()));
		System.out.println(inventory);
		
		inventory.sort(comparing(Apple::getWeight));
		System.out.println(inventory);
	}
	
	public static class Apple {
	    private int weight = 0;
	    private String color = "";

	    public Apple(int weight, String color){
	        this.weight = weight;
	        this.color = color;
	    }

	    public Integer getWeight() {
	        return weight;
	    }

	    public void setWeight(Integer weight) {
	        this.weight = weight;
	    }

	    public String getColor() {
	        return color;
	    }

	    public void setColor(String color) {
	        this.color = color;
	    }

	    public String toString() {
	        return "Apple{" +
	               "color='" + color + '\'' +
	               ", weight=" + weight +
	               '}';
	    }
	}
	
	static class AppleComparator implements Comparator<Apple>{
	
		public int compare(Apple a1,Apple a2){
			return a1.getWeight().compareTo(a2.getWeight());
		}
	}
	
}
